JPS62501340A - hammer mill - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] hammer mill Technique 茗υ1 The present invention includes a grinding chamber and a hammer or beater for reducing the size of coarse material. It is equipped with a rotor and a device for feeding coarse materials and discharging products whose dimensions have been reduced. This is about a hammer mill.

11 dead bodies In this type of hammer mill, the material is fed into the top zone of the grinding chamber. The rotor generally rotates within the grind chamber about a horizontal axis while . A beater plate in the form of a screen sleeve is generally located at least at the bottom of the grind chamber. The product with reduced dimensions passes through this beater plate and is ground or screeed. into a collection compartment surrounding the sleeve or both, and is then discharged. . Such hammer mills pass the dimensionally reduced product through a screen sleeve. The energy is transported along the grind chamber and passed through it repeatedly. There is a high need for

Le skin to l anus The purpose of the invention is to reduce material dimensions with significant energy savings and high efficiency. Our goal is to provide a hammer mill that can.

This object is achieved by the configuration of the present invention described below.

In the hammer mill of the present invention, the material fed to the grinding chamber is very short. It is based on the idea that the dimensions of the reed decrease after passing through the grind path. feeding A product whose dimensions are significantly reduced when the material is first hammered and subsequently reduced in size. Needless to say, the product circulates with the rotor and finally passes through the screen sleeve and is discharged. You will be able to get it out.

The advantage of the hammer mill of the present invention is that several An inlet and an outlet are provided to ensure an even load on the rotor, and the way the rotor rotates. The direction is reversed and both sides of the hammer or beater are used.

Coarse material can be fed into the grinding chamber in different horizontal planes to further increase the rotor height. Preferably, the supply ducts are arranged for use.

According to the present invention, the axis of the rotor is vertical and the grinding chamber is arranged horizontally. This makes it particularly easy and advantageous to have a large number of supply and discharge ducts around the periphery of the grinding chamber. material fed from above can be easily fed radially. Ru. Discharge conduits with each supply duct spaced a relatively short distance behind it Since the material fed through each supply duct is Immediately after colliding with the motor and reducing its size, it passes through the discharge duct corresponding to the next outlet and its size decreases. It can be discharged directly from the grinding chamber as reduced product. Therefore, the dimensions The reduced product is no longer transported through the grinding chamber as before.

With this configuration of the present invention, the hammer mill has a somewhat large number of continuous arrangements on the outer periphery. divided into mill segments, each segment has an inlet and a corresponding supply duct By means of an outlet behind which a corresponding discharge duct is arranged at a short distance. The rotor supporting the hammer or beater is formed by these mill segments. related to everything.

The outlet provided according to the invention can be completely open or can be a screen with various hole sizes. Selectively cover with lean to allow selection of emitted product dimensions. Such a star You can easily arrange screens on two or more common slides and The ride has the corresponding exit completely open or selectively covered by one of the screens. It can be displaced as it can be.

Ward side 1. J Rud Life FIG. 1 is a schematic front view of a hammer mill according to the present invention, and FIG. 2 is a schematic front view of the hammer mill according to the present invention. Plan view, Figure 3 is a schematic diagram of the two exit screens, Figure 4 is a schematic diagram of the feed proportioning device. The front view, FIG. 5, is a schematic bottom view of the feed proportioning device shown in FIG.

Mitsuyu's upper dog guide As is clear from Fig. 1 and Fig. 2, the rotor driven by the electric motor 8!11 3 is supported for rotation about an axis 2 substantially perpendicular to the grinding chamber 1. has been done. This rotor 3 has a hammer or beater which is not shown. The outer end of this hammer is located on the circumference of the rotor indicated by the dotted line in Figure 2. pass through.

In the illustrated embodiment, three supply ducts 4 are provided around the grinding chamber 1 . It communicates with the grinding chamber 1 via two corresponding input lowers a. supply duct 4 The grind, i.e. the material to be crushed or ground, is fed into the surroundings of the grinding chamber 1. It is fed radially and downwardly. Each supply duct 4 is provided with a guide member 10. These guide members grind coarse material radially in several horizontal planes. The chamber 1 and the rotor 3 are fed. For this purpose, the guide member 10 is connected to each supply duct 4. They are arranged in the arrangement shown in FIGS. 1 and 2. Other suitable means of guidance These guiding means can also be used to guide the material to be ground in various planes. For example, the height can be adjusted to feed radially into the grind chamber at Preferably, each supply duct 4 also has a corresponding one around the grinding chamber 1. The discharge duct 5 is connected to the discharge duct 5, and the discharge duct 5 is connected to the grind direction, That is, along the grinding path in the direction of rotation of the rotor 3, there is a short distance behind the supply duct. They are placed at a distance from each other. Both of these discharge ducts are connected to the exit lower b. It communicates with the lined room 1.

The supply duct 4 handles the coarse material supplied from above around the grinding chamber 1. be arranged in any other suitable manner for radial feeding within the mill/department. Can be done.

The outlet lower b of each discharge duct 5 then adjusts the product size to reduce the discharged size. 9. The device shown can be selectively covered with a screen of specific hole size to In the example shown, screens with different hole sizes can be mounted on a common slide as shown schematically in Figure 3. It is useful to place it at 9. The screen placed in the slider and id is this specific example. shows two screen locations 8a and 8b with different hole sizes and a free opening 8 between these locations. It consists of c. slide relative to the corresponding output lower b in the manner schematically shown in Figure 1. By vertically displacing the door 9, the free opening 8C can be placed at the exit lower b. If you pre-select the dimensions of the product that will be ejected with reduced dimensions or The lean point 8a or 8b can be selectively inserted into the output lower b.

The above-described structure of the illustrated embodiment illustratively includes three supply ducts to simplify the drawing. and three associated discharge ducts 5 are staggered around the grinding chamber 1. Evenly spaced.

However, the number of supply ducts and discharge ducts can be freely selected on a case-by-case basis depending on demand. In either case, it can be applied to the desired grinding operation.

The hammer mill according to the invention has in each case as many mill segments as possible. i.e. divided into zones of reduced size, in the spacing between the supply duct 4 and the discharge duct 5. should be kept as short as possible; in fact, it can even be zero.

The actual result is approximately 40 to 60 x g after feeding the coarse material via the feed duct 4. When passing through the grind path, it indicates that the size reduction work has already been almost completed.

In one example hammer mill having a grinding chamber 1 with a diameter of 1500zi Each supply duct 4 has its associated discharge duct 1-5 slightly behind it! Between 50xx The width of each person's lower a is the arc length of 100yj+ Select 1-Each exit 7b The width of was chosen to be an arc length of 200I.

Therefore, 4 to the supply duct 1 provided with the inlet lower a, intermediate ducts 1 to 6, and the outlet [1 For each mill segment with an associated discharge duct 5 etc. provided with 7b Only 300 to 350 square mill circumferences are required.

With this selected dimension, the hammer mill has 16 mills around the 1st chamber. supply ducts 4 and 16 discharge ducts 5 can be provided, thus 16 can be divided into segments. Dimensions of screen hole in exit slide 9 Therefore, it can be said that the screen area 8a is 1°5u, and the screen area 8b is 3cm.

Instead of free aperture 8C, very large dimensions, for example 2000 or more A third screen may also be provided.

In the illustrated hammer mill, the grain is supplied from above and passed through the supply duct 4. The coarse material fed into the door chamber 1 in the radial direction passes through the lower part a of the rotor 3. The beam impinges and thereby reduces the size considerably, after which the material It immediately reaches the outlet lower b of the associated discharge duct 5. Gains in certain mill segments The product is thus considerably reduced in size, so that the product is almost entirely the body enters the associated discharge duct 5 through the free opening 8C or the screen 8a or 8b; Therefore, the reduced size product can be discharged and does not need to be transported through the mill.

Coarse material is fed vertically into the grinding chamber 1 and is fed in the radial direction, so that the material The material is deflected into a horizontal path of motion by a 90° angle by the hammer or beater of the rotor. This further promotes size reduction.

Product with reduced dimensions discharged from the hammer mill according to the invention via the discharge duct 5 The screen residue is sent to any suitable screening device to further reduce the size. It is desirable to circulate the

Since the hammer mill according to the present invention has a relatively simple structure, it has various advantages. The power requirements for size reduction are considerable. reduction in wear and tear and repair costs, and reduction in the degree of heating of the material during dimension reduction operations. lower moisture removal as well as less moisture removal.

The feed proportioning device shown in FIGS. Particularly suitable for continuous feeding by several feeding ducts into hammer mills Each supply duct is equipped with a feed proportioning device of the type shown in Figures 4 and 5. It is combined with a corresponding proportional screw in the position.

The feed proportioning device of FIGS. 4 and 5 is arranged symmetrically about a vertical axis 20. Two coaxial chambers 21 and 22 for receiving different materials and a proportional screen underneath. 23 and corresponding internal and external openings 24.25 in the bottom of the chamber 21.22. These openings correspond to the first and second inlets of the proportional screw 23.

As is especially clear from FIG. 5, the proportional screw 23 is A first and a corresponding first and second 2 and extending radially outwardly from the screw port 26 to its outlet tube 26, respectively. There is.

The rotational speed of the proportional screw is adjusted to the required value of the hammer mill by a control means (not shown). controlled in a known manner as a function of the loading of the The hammer mill, which is supplied with coarse material by a proportional device, inserts the material evenly and operates. be done.

The two chambers 21.22 are taken up by the screw 23 at the opening 24.25 and continuously fed to the immersion mill. For example, accommodating two types of materials with different particles perform the action of

The first substance placed in the central chamber 21 is inserted into the first screw corresponding to the inner opening 24. -Population is taken up by the proportional screw 23 and sent to the hammer mill, etc. The second material placed in the outer chamber 22 is inserted into the outer opening 25 and the corresponding second screw. - population is sufficient to operate the hammer mill with the desired loading by means of the screw 23. It will be taken up in large quantities.

The worker may, for example, use a handle while feeding fresh bulk material into the outer compartment 22. The discharge duct 5 of the Marmil is connected to the central chamber via a sieving device (not shown). can be done.

Due to the special mode of operation of the feed proportioning device described above, the first The material will have absolute priority over the second material placed in the outer chamber 22. . The reason is that the first material in the central chamber 21 In the Liu population, the proportional screw 23 necessarily picks up the second material first. It is then picked up from the outer chamber 22 with a second screw port corresponding to the outer opening. This is because it is then fed to the hammer mill.

Such a mode of operation of the proportioning device described above makes it possible to Problems that can occur can be solved extremely easily with minimal energy consumption and simple technical measures. It can be solved in a simple way.

Such structures of feed proportioning devices also include, for example, chain conveyors, vibrating Can be used in conjunction with other controllable conveying devices such as conveyors and has corresponding openings. A very simple system which cooperates as described above with several radially arranged proportional means through the Above mentioned regarding automatically controlled preference of various materials by simple coaxial chamber maintain the benefits of

The number of coaxial chambers and corresponding proportional means can be selected more or less freely depending on the requirements. Ru.

・One mouthful.

The hammer mill and feed proportioning device of the present invention can be used to process a variety of reduced size and bulk materials. It can be used for. They are particularly suitable for the manufacture of mixing mixers and are The cooperation of the supply duct and the feed proportional device allows for several proportional devices to be used. This provides particular advantages for the continuous delivery of various materials.

International study report

Claims (1)

[Claims] (5) The supply duct (4) is provided with guiding means and is made of coarse material at different horizontal levels around the rotor. Any one of claims 1 to 4 arranged so that it can be supplied on a surface. two hammer mills. (6) Connect the loose material into several streams to the supply duct (4) of the hammer mill. A feed proportioning device is provided which feeds at an adjustable rate for continuous feed; at least two coaxial chambers in which the feeding device is arranged about a vertical axis (20); (21, 22), the first central chamber (21) containing the first bulk material. The outer annular chamber (22) accommodates the second bulk material and provides an adjustable feed. Several feed proportioning devices with velocity radially below the chambers (21, 22) arranged so that each proportional device has a corresponding one in the opening (24) at the bottom of the chamber (1). An opening in the bottom of the annular chamber (22) communicates with the central chamber (21) through a first inlet. a second outer annular via a corresponding second inlet of the proportional device (23) to the mouth (25); It communicates with the chamber (22) and thus, when activated, the proportional device (23) connects the first and second Various loose materials are taken up from the corresponding chambers (21, 22) at the entrance (24, 25). and feed the bulk material from the outer end via the outlet pipe (26) into the corresponding part of the hammer mill. Hammer according to claim 1, which allows continuous feeding into the supply duct (4). mill. (7) The feed proportional device is a radially arranged proportional screen with adjustable rotational speed. 7. A hammer mill according to claim 6, comprising a screw (23).